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论文类型： 期刊论文

发表时间： 2012-08-01

发表刊物： CENTRAL EUROPEAN JOURNAL OF PHYSICS

收录刊物： SCIE

卷号： 10

期号： 4

页面范围： 947-952

ISSN号： 1895-1082

关键字： non-Markovianity; generalized Lindblad master equation

摘要： Taking a two-level system interacting with a two-band environment as an example, we discuss the non-Markovianity and initial system-environment correlations for the generalized Lindblad master equation by using a recently introduced measure given by Breuer et al. Our results show that the initial states of the environment and initial system-environment correlations have strong effects on the non-Markovianity of the reduced system. Moreover, we also show that information and energy can flow in different directions, i.e., energy flows to the system while information flows from the system, which is quite different from previous results.